Question

Photon and electron are given same energy $\left({10}^{-20}J\right)$ . Wavelength associated with photon and electron are ${\lambda }_{ph}and{\lambda }_{el}$ then correct statement will be

• A. ${\lambda }_{ph}>{\lambda }_{el}$
• B. ${\lambda }_{ph}>{\lambda }_{el}$
• C. ${\lambda }_{ph}>{\lambda }_{el}$
• D. $\frac{{\lambda }_{el}}{{\lambda }_{ph}}=C$

Answer 1

The correct option is A

${\lambda }_{ph}>{\lambda }_{el}$

Wavelength of photon will be greater than that of electron because mass of photon is less than that of electron
$\Rightarrow {\lambda }_{ph}>{\lambda }_e$